CN114941383A - Anti-leakage and anti-leakage bidirectional superposed plate seam structure and pouring method - Google Patents
Anti-leakage and anti-leakage bidirectional superposed plate seam structure and pouring method Download PDFInfo
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- CN114941383A CN114941383A CN202210415943.5A CN202210415943A CN114941383A CN 114941383 A CN114941383 A CN 114941383A CN 202210415943 A CN202210415943 A CN 202210415943A CN 114941383 A CN114941383 A CN 114941383A
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- Prior art keywords
- pouring
- concrete
- leakage
- laminated
- joint structure
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
- E04B1/68—Sealings of joints, e.g. expansion joints
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
- E04B5/17—Floor structures partly formed in situ
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
- E04G21/06—Solidifying concrete, e.g. by application of vacuum before hardening
- E04G21/063—Solidifying concrete, e.g. by application of vacuum before hardening making use of vibrating or jolting tools
- E04G21/066—Solidifying concrete, e.g. by application of vacuum before hardening making use of vibrating or jolting tools acting upon the surface of the concrete, whether or not provided with parts penetrating the concrete
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
- E04G21/06—Solidifying concrete, e.g. by application of vacuum before hardening
- E04G21/08—Internal vibrators, e.g. needle vibrators
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention discloses a joint structure between two-way laminated slabs for preventing leakage and a pouring method, wherein when the two sides of a laminated slab meet pouring conditions, chiseling the original remaining straight combed edges to a notch with 45-degree inclination at the two sides protruding out of the center, then chiseling loose concrete thoroughly, and cleaning and washing the joints at the two sides of the laminated slab; starting pouring of seams between the first laminated plates, wherein the first amount of pouring is not more than half of the thickness of the plates, and reinforcing steel bars at the bottoms of the plates are required to be covered; and after the first pouring concrete is solidified, performing second pouring of the concrete, wherein the second pouring is to finish the pouring work of the joint structure between the whole laminated plates. In the invention, the contact area between the concrete of the joint structure between the laminated slabs and the concrete of the existing floor slab is increased by chiseling the straight joint edge to the notch with 45 degrees at the two sides which protrudes from the center, the degree of contact is increased, and the risk of cracks of the floor slab at the later stage is reduced; and the opening surface is not flat and is cut in a step shape so as to increase the occlusion degree of new and old concrete.
Description
Technical Field
The invention relates to the technical field of bidirectional laminated slabs, in particular to a joint structure between anti-leakage and anti-leakage bidirectional laminated slabs and a pouring method.
Background
1. According to the national standard: the integral joint on the side of the two-way composite slab is preferably arranged in the secondary stress direction of the composite slab and is preferably kept away from the maximum bending moment section. The seam may take the form of a post-cast strip and should meet the following specifications:
a: the width of the post-cast strip is not less than 200 mm;
b: longitudinal stressed steel bars at the bottoms of the two side plates of the post-cast strip can be welded, lap-jointed, bent and anchored in the post-cast strip;
2. the existing joint between the two-way laminated plates is mostly left with a straight joint, so that the concrete is poor in connectivity after being filled, and the risk of joint cracking between the laminated plates in the later period is increased.
3. Present two-way coincide inter-plate seam pouring mode is mostly the one shot forming, appears vibrating too abundant condition easily for thick aggregate is concentrated in coincide inter-plate seam bottom, has reduced the seam between the coincide inter-plate from waterproof nature, increases later stage seepage risk, and increases and leak thick liquid hidden danger, influences the concrete impression.
4. Therefore, the existing two-way joint reserving form and pouring method cannot meet the pursuit of high-quality construction, and only a simple and efficient laminated plate joint and pouring method are invented to ensure that the joint between the two-way laminated plates cannot crack and leak in the later period, so that the building is safe and reliable to use.
Disclosure of Invention
The invention aims to solve the problems of the prior art, and provides a joint structure between two-way laminated plates for preventing leakage and a pouring method.
In order to achieve the purpose, the invention adopts the following technical scheme:
a joint structure and a pouring method between two-way superimposed plates for preventing leakage and leakage of slurry comprise the following steps:
the method comprises the following steps: when the two sides of the laminated slab meet the pouring conditions, chiseling the original remained straight racking edge to a notch with 45 degrees of two sides protruding from the center, then thoroughly chiseling loose concrete, and cleaning and washing the joints at the two sides of the laminated slab;
step two: starting pouring of seams between the first laminated plates, wherein the first amount of pouring is not more than half of the thickness of the plates, and reinforcing steel bars at the bottoms of the plates are required to be covered;
step three: after the first pouring concrete is solidified, performing second pouring of the concrete, wherein the second pouring is to finish the pouring work of the joint structure between the whole laminated plates;
step four: and (5) carrying out moisture preservation and maintenance in time after the concrete pouring of the joint structure between the laminated plates is finished.
In the above method, the depth of the 45 degree oblique gap is preferably greater than 5 cm and should not exceed 2/5 of the thickness of the floor slab.
In the method, the opening surface is not flat and is cut in a step shape so as to increase the engaging degree of new and old concrete.
In the method, the first pouring is preferably carried out by using a vibrating rod for vibration compaction, and the second pouring is preferably carried out by using a flat plate vibrator for vibration compaction.
In the method, when the design is not required, the strength grade of the joint structure between the superposed plates is preferably higher than that of the concrete on two sides by one grade, and an additive for reducing shrinkage is added.
Compared with the prior art, the invention has the following beneficial effects:
in the invention, the contact area between the concrete of the joint structure between the laminated slabs and the concrete of the existing floor slab is increased by chiseling the straight joint edge to the notch with 45 degrees at the two sides which protrudes from the center, the degree of contact is increased, and the risk of cracks of the floor slab at the later stage is reduced; the opening surface is not flat and is cut in a step shape so as to increase the occlusion degree of new and old concrete; the purpose of pouring the joint structure between the superimposed sheets twice is that, prevent that the concrete volume is easy excessively vibrated less in the one shot forming, lead to the concrete to take place the segregation phenomenon, reduce the structural strength of concrete, increase later stage seepage risk.
Drawings
FIG. 1 is a schematic view of a joint structure between two-way laminated plates for preventing leakage and leakage of slurry and a pouring method of the invention before pouring the joint structure between the two-way laminated plates;
FIG. 2 is a schematic view of an edge of a joint structure between two laminated plates of the present invention and a method for casting the joint structure between two laminated plates;
FIG. 3 is a schematic view of a first concrete pouring of a joint structure between two laminated plates in a method for pouring the joint structure between two laminated plates of the present invention;
FIG. 4 is a schematic diagram of a second concrete pouring of the joint structure between the two-way laminated plates with leakage prevention and the pouring method provided by the invention;
fig. 5 is a schematic diagram of a joint structure between two-way laminated plates for preventing leakage and a pouring method provided by the invention, wherein the joint structure is inclined by 45 degrees.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1-5, a joint structure between two-way laminated plates for preventing leakage and leakage of slurry and a pouring method thereof comprise the following steps:
the method comprises the following steps: when the two sides of the laminated slab meet the pouring condition, chiseling the original remained straight combed edge to a notch with 45-degree inclination at the two sides of the center protrusion, then chiseling loose concrete thoroughly, and cleaning and washing the joints at the two sides of the laminated slab;
step two: and starting the first pouring of the joints between the laminated plates, wherein the first amount is not more than half of the thickness of the plate, and the bottom steel bars of the plate are required to be covered.
Step three: after the first pouring concrete is solidified, performing second pouring of the concrete, wherein the second pouring is to finish the pouring work of the joint structure between the whole laminated plates;
step four: and after the concrete pouring of the joint structure between the laminated plates is finished, moisture preservation and maintenance are carried out in time.
In the method, the purpose of chiseling the notch with 45 degrees inclined from the straight racking edge to the two sides which protrude from the center is to increase the contact area between the concrete of the joint structure between the laminated slabs and the concrete of the existing floor slab, increase the degree of contact and reduce the risk of cracks on the floor slab at the later stage.
In the above method, the depth of the 45 degree oblique gap is preferably greater than 5 cm and should not exceed 2/5 of the thickness of the floor slab.
In the method, the notch surface is not flat and is cut in a stepped shape so as to increase the engaging degree of new and old concrete.
In the method, the joint structure between the superposed plates is poured twice, so that the phenomenon that the concrete is separated due to the fact that the concrete is less in amount and easy to vibrate excessively in one-time pouring forming is prevented, the structural strength of the concrete is reduced, and the later-period leakage risk is increased.
In the method, the first pouring is preferably carried out by using a vibrating rod for vibration compaction, and the second pouring is preferably carried out by using a flat plate vibrator for vibration compaction.
In the method, when the design is not required, the strength grade of the joint structure between the superposed plates is preferably higher than that of the concrete on two sides by one grade, and an additive for reducing shrinkage is added.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (5)
1. A joint structure and a pouring method between two-way superimposed sheets for preventing leakage and leakage are characterized by comprising the following steps:
the method comprises the following steps: when the two sides of the laminated slab meet the pouring conditions, chiseling the original remained straight racking edge to a notch with 45 degrees of two sides protruding from the center, then thoroughly chiseling loose concrete, and cleaning and washing the joints at the two sides of the laminated slab;
step two: starting pouring of a seam between the first laminated plates, wherein the first amount of pouring does not exceed one half of the thickness of the plate, and the bottom steel bars of the plate must be covered;
step three: after the first pouring concrete is solidified, performing second pouring of the concrete, wherein the second pouring is to complete the pouring of the whole joint structure between the laminated plates;
step four: and (5) carrying out moisture preservation and maintenance in time after the concrete pouring of the joint structure between the laminated plates is finished.
2. The joint structure and the pouring method for the bidirectional laminated slab with the leakage and leakage preventing function according to claim 1, wherein the depth of the 45-degree oblique gap is preferably greater than 5 cm and should not exceed 2/5 of the thickness of the floor slab.
3. The joint structure between the anti-leakage and anti-leakage bidirectional superposed plates and the pouring method thereof according to claim 1, wherein the notch surface is not flat and is cut in a stepped shape.
4. The structure of joint between two-way laminated plates for preventing leakage and leakage of slurry and the casting method according to claim 1, wherein the first casting is preferably compacted by vibration with a vibrator, and the second casting is preferably compacted by vibration with a plate vibrator.
5. The joint structure and the pouring method between the two-way laminated plates for preventing leakage and leakage of slurry as claimed in claim 1, wherein when the design is not required, the strength grade of the joint structure between the laminated plates is preferably one grade higher than that of the concrete on both sides, and an additive for reducing shrinkage is added.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210415943.5A CN114941383A (en) | 2022-04-20 | 2022-04-20 | Anti-leakage and anti-leakage bidirectional superposed plate seam structure and pouring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210415943.5A CN114941383A (en) | 2022-04-20 | 2022-04-20 | Anti-leakage and anti-leakage bidirectional superposed plate seam structure and pouring method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114941383A true CN114941383A (en) | 2022-08-26 |
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ID=82908129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210415943.5A Pending CN114941383A (en) | 2022-04-20 | 2022-04-20 | Anti-leakage and anti-leakage bidirectional superposed plate seam structure and pouring method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114941383A (en) |
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2022
- 2022-04-20 CN CN202210415943.5A patent/CN114941383A/en active Pending
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